Well I had the exact
OPPOSITE experience and thought I was saving you work.
Should have expanded my post:
I changed 3 sets of the same rubber coated Fel's over time, with different fasteners and various adhesives and each set leaked-immediately.
Milodons with Motorsport gray silicone sparingly applied and the Mr. Gasket bolts changed all that. The Fel's were pushing out over time (not from overtightening) and Milodons have not.
Take your pick.